The next eight questions are based on these data:

Small Wonder, an amusement park, experiences seasonal attendance. It has collected two years of quarterly attendance data and made a forecast of annual attendance for the coming year. Compute the seasonal indexes for the four quarters and generate quarterly forecasts for the coming year, assuming annual attendance for the coming year to be $1525.$

Park Attendance $($in thousands$)$

Quarter Year $1$ Year $2$

Fall $352391$

Winter $156212$

Spring $489518$

Summer $314352$

Calculate the seasonal index for Fall. $($Three decimal places.$)($Hint $1$: this is the average seasonal index across all years.$)($Hint $2$: perform all your calculations in Excel and never manipulate any number by rounding it; only change the number of decimal places the numbers are displayed with. $)$